Tunable dual-band negative refractive index in ferrite-based metamaterials

被引：34

作者：

Bi, Ke ^{[1
]}

Zhou, Ji ^{[1
]}

Zhao, Hongjie ^{[2
]}

Liu, Xiaoming ^{[1
]}

Lan, Chuwen ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Aerosp Res Inst Special Mat & Proc Technol, Beijing 100074, Peoples R China

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 09期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

SPLIT-RING RESONATORS; WIRES; LENS;

D O I：

10.1364/OE.21.010746

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A tunable dual-band ferrite-based metamaterial has been investigated by experiments and simulations. The negative permeability is realized around the ferromagnetic resonance (FMR) frequency which can be influenced by the dimension of the ferrites. Due to having two negative permeability frequency regions around the two FMR frequencies, the metamaterials consisting of metallic wires and ferrite rods with different sizes possess two passbands in the transmission spectra. The microwave transmission properties of the ferrite-based metamaterials can be not only tuned by the applied magnetic field, but also adjusted by the dimension of the ferrite rods. A good agreement between experimental and simulated results is demonstrated, which confirms that the tunable dual-band ferrite-based metamaterials can be used for cloaks, antennas and absorbers. (C) 2013 Optical Society of America

引用

页码：10746 / 10752

页数：7

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